What is the output voltage of a 3 phase VFD?

[abc_de]

Re: What is output voltage of 3 phase vfd

Here is some results

This is input voltage



This is output voltage phase to phase



:bang::bang:

:roll::roll:

 

[FvM]

Re: What is output voltage of 3 phase vfd

As long you don't show oscilloscope waveforms of DC-bus to phase and phase to phase, I can't comment the measurement.

I presume it's 3x120° system, not 90° which has of course lower output voltage.

 

[abc_de]

Re: What is output voltage of 3 phase vfd

Hello
Here is some output by Rc Filter

Yes these measurements are 120degree phase shift

This is output of spwm by which i am getting lower voltage from expectation
Around 175vac phase to phase



This output of saddle pwm from both lower and higher channel of pwm







Output voltage with spwm and saddle pwm is almost same still spwm gives more output voltage

 

[abc_de]

Re: What is output voltage of 3 phase vfd

hello
is this right ?
if no then how to correct it ?

 

[FvM]

Re: What is output voltage of 3 phase vfd

The second and third waveform look very different from any expectable inverter output. No idea how you managed top get it.

 

[abc_de]

Re: What is output voltage of 3 phase vfd

i also thinking waveform is not like expected
in 1st pic i use sine table method.